Defining a field?

Education is multidisciplinary and as a result we end up knowing bits of things from many different disciplines. Anthropology, political science, sociology, economics, and myriad crossover disciplines like public policy. This can make it more difficult to figure out our intellectual identity in education, especially if we are more academic than practice-oriented.
Immigration studies is an interdisciplinary field as well, pulling from the traditional disciplines much like education. Most scholars have training in one of the traditional disciplines.
Where does someone trained in education fit in terms of disciplines? I struggle with this sometimes. Figuring out where my contribution will be.
